HomeMy WebLinkAbout04-16-2019 Item 09, Casa-Stenner-Murray Waterline replacement Department Name: Public Works
Cost Center: 6004
For Agenda of: April 16, 2019
Placement: Consent
Estimated Time: N/A
FROM: Daryl Grigsby, Public Works Director
Prepared By: Hai Nguyen, Engineer III
SUBJECT: ADVERTISE CASA/STENNER/MURRAY WATERLINE REPLACEMENT,
SPECIFICATION NO. 91312
RECOMMENDATION
1. Approve the project plans (Attachment A) and specifications (Attachment B) for the
Casa/Stenner/Murray Waterline Replacement Project, Specification Number 91312; and
2. Authorize staff to advertise the project for bids; and
3. Authorize the City Manager to award the construction contract for the bid total if the lowest
responsible bid is within the Engineer’s Estimate of $1,500,000.
4. Approve a budget transfer o f $569,876 from the Water Fund’s Undesignated Capital account
to the project account.
DISCUSSION
Background
The City’s water distribution system is comprised of 184 miles of pipe with diameters ranging in
size from four inches to 30 inches. Some of the pipes that make up the City’s water distribution
system have been identified as undersized and/or beyond their useful design life. The useful
design life expectancy of waterlines is typically 50 years. Waterline breaks occur with more
frequency with aging waterlines, and the resulting repairs are disruptive to the public and
expensive. Waterline breaks undermine the roadway requiring full depth and costly
reconstruction to properly rehabilitat e the pavement.
Replacement of water distribution pipes and related facilities is an ongoing program to replace
aging, substandard, and deteriorating infrastructure, with the added benefit of lowering costs and
reducing customer impacts associated with emergency repairs. The main objectives of this
program are to ensure reliable water services, reduce the need for emergency repairs, and to
enhance available fire flows.
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Project
The Casa/Stenner/Murray Waterline Replacement Project (P roject) proposes replacement of
approximately 3,150 lineal feet of waterline on Casa, Stenner, Murray and the intersections of
Chorro/Meinecke and Chorro/Murray (Attachment C). The waterlines that will be replaced with
this project are substandard (undersized) and deteriorated. Their replacement will eliminate
capacity limitations for Sierra Vista Hospital and improve water flow for fire protectio n.
Replacing these waterlines will result in lower costs to the City and reduced customer impacts
associated with emergency repairs. Reducing or eliminating the number of required emergency
repairs provide more time for maintenance staff to complete preventive maintenance, which
prolongs the expected service life of Water Distribution facilities and equipment.
This project was originally intended to be constructed as a component of the Waterline
Replacements Project 2016, Specification 91436, which was released for construction last year.
It was removed from that project due to additional design and coordination efforts that were
necessary with the Sierra Vista Hospital.
Previous Council or Advisory Body Action
This project was identified in the 2015-2017 and 2017-19 Financial Plans that were approved by
Council.
Policy Context
The City Council approved the Potable Water Distribution System Operations Master Plan
(Master Plan) on January 19, 2016. The Master Plan identified this project as a high priority.
Additionally, per the October 2018 Financial Management Manual, Council approval is required
for Public Projects that cost over $175,000.
Public Engagement
Public engagement was conducted during the initial identification of this project to be included
in the 2015-17 Financial Plan. This is a critical public infrastructure project and is important for
fire safety and the general health and welfare the public.
CONCURRENCE
This project has the concurrence of the Utilities Department.
ENVIRONMENTAL REVIEW
A portion of t he Project is located within a potentially archeologically sensitive zone of influence
(within 200 feet of Stenner Creek). Mitigation measures approved through Mitigated Negative
Declaration ER10-07 are included in the Project’s specificat ions and will be followed by the
City’s contractor, as applicable, consistent with the requirements of the California Environmental
Quality Act (CEQA).
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FISCAL IMPACT
Budgeted: Yes Budget Year: 2015-17 & 2017-19
Funding Identified: Yes
Fiscal Analysis:
Estimated Project Cost by Funding Sources
Construction Estimate:$1,500,000
Contingencies (15%):$225,000
Contruction Management $200,000
Material Testing:$10,000
Printing:$500
Total for Project:$1,935,500
Total funding available (91312)$1,365,624
Additional Funding Needed
(601.9501.71501)$569,876
Casa/Stenner/Murray Waterline Replacement (91312)
Waterline improvements identified in this project are included in the 2017-19 Financial Plan
page E2-153 which provided $1,870,000 for this project. In October 2018, a waterline failure on
Highland Drive and the associated emergency repair work required the use of portions of this
project ’s funding to complete.
Funding for this project is available in the Project Account (91312), which has a current
available balance of $1,365,624. Staff is recommending that additional funding of $569,876 be
transferred from the Water Fund’s Undesignated Capital account (601.9501.71501) to provide
adequate funding for the project. Undesignated Capital has a current available balance of
$253,735. An additional $316,140 is expected to become available within Undesignated Capital
after completion of the Waterline Replacement project (91436), which is currently being
constructed and is 60% complete and under budget. The subject project will not be awarded
unless sufficient funding exists to support the work, including contingencies. Actual costs will be
known when the project opens for bid.
ALTERNATIVES
Deny or defer approval to advertise. The City Council may choose to deny or defer the approval
to advertise this project. Staff does not recommend this option, as the water mains included in
this project continue to deteriorate and pose a high risk of catastrophic failure, requiring
expensive repairs.
Attachments:
a - Council Reading File - 91312 Plans
b - Council Reading File - 91312 Specifications
c - Project Vicinity Map
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CASA / STENNER / MURRAY
WATER REPLACEMENT
1 OF 1
0
SCALE IN FEET
800
PROJECT
LOCATIONS
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